262 GUEAt SERPE\TINP>6ELt OF NEW SOUTrf WALES, Vi., 



the north with mudstones dipping at 75°, but this flattens out 

 towards the roadway on the east. Crossing the roadway, the 

 strata are seen to be intensely disturbed, and Burindi rocks are 

 brought in by the faulting. This is adjacent to the Burindi 

 rocks of Hall's Creek, already described (p.241). 



North of this, the Baldwin Agglomerate broadens out into the 

 more or less level-topped Bingara Range. To the east lies the 

 anticline of Barraba rocks on which stands Mr. Charteris' home- 

 stead, Hilltop (see Plate xx., .Section 3). On the west of this lies 

 the valley of Flaggy Creek, beyond which is a sharp scarp where 

 the Baldwin rocks are brought to the surface by a fault. The 

 agglomerates extend to the west of this. The dips, where ob- 

 tainable, vary somewhat, but are generally small. At Pound 

 Creek, a sharp nip increases the dip to E.10°N. at 45 . A mile 

 and a half to the west, on Duckholes Creek, the close association 

 of dips of E.15°N. at 20°, and N.W. at 27°, is doubtless due to the 

 presence of the fault which comes up from Cobbadah Creek. At 

 Lickholes Creek, further west, the dip is E.IG"" N. at 15", and at 

 the western edge of the range it is S. 40° W. at 18'. Here (in 

 Arnold's Creek) there is a layer of chert and fine tulf, and near 

 bv a flo\t of spilite interstratified with the agglomerate, recalling 

 that on Anderson's Creek. A rapid descent of 1,300 feet to 

 Boundary Creek shows a great thickness of agglomerate, dipping 

 W.20'N. at 6°, full of fragments of granite, chert, etc., with an 

 interstratified flow of porphyritic spilite-lava. 



Returning to Hall's Creek — The western side of the \ alley, at 

 its southern end, is a continuation of the fault-scarp of Baldwin 

 rocks, and rises directly out of Barraba mudstone. North 

 of a point about twelve miles south of Bingara, a spur branches 

 out from the fault-scarp running to the north, and where this 

 Avas crossed, eight miles south of Bingara, the eastern side 

 resembled Middle Devonian rocks far more than the Barraba 

 Series. They consisted of easterly-dipping, banded, yellow and 

 blue shales and interbedded tuffs, with lenticles of limestone, 

 and bands of tuffaceous breccia like that in the Tamworth Series. 

 West, again, is a mass of andesite-tuff, such as occurs in the 



